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Silly question?! Flash sync and tech camera

Morning all.

Might be a daft question but is it possible to use flash with a digital back on a tech camera? If I was using say a Rodenstock 90mm HRSW lens on a tech camera, what shutter speed can I sync flash with?

Re: Silly question?! Flash sync and tech camera

Yes you can, I've done it once.

I'm rusty on flash theory though, so the sync speed things someone else need to provide details on. However I think it syncs at all speeds available on the shutter, as it's a leaf shutter. [EDIT: as Victor says above]

If you use a copal shutter max speed is 1/500 on copal 0. If you use a Hasselblad back with Kodak the practical limit is about 1/125, otherwise the autosync mode often fails (that is the back's ability to react to the shutter signal, unrelated to flash). The Phase One Kodak backs (P25+, P45+ etc) with wakeup procedure can handle the full shutter speed, as well as the Dalsa-based backs, and Sony-based backs of course.

Re: Silly question?! Flash sync and tech camera

Flash Sync Speed and Zero/Normal Latency are unrelated.

Sync speed on a tech camera is up to the max speed of the shutter (1/500 for a copal 0).

Make sure your transmitter can handle 1/500th with a leaf shutter. For instance a standard PocketWizard in normal mode cannot, and you'll lose light at that speed, but not because of the back/lens (but because the transmitter is taking too long to trigger the strobe).

Re: Silly question?! Flash sync and tech camera

Thanks, I understand, I misunderstood Torgers meaning in his post. So second simple question, what is the process with a IQ260? Cable from lens to back, I haven't seen an IQ back before so cable sync to flash? Or is there a way to fire with my profoto air remote?

Sorry for the questions, just trying to get things in order before everything arrives.

Re: Silly question?! Flash sync and tech camera

Originally Posted by mjr

Thanks, I understand, I misunderstood Torgers meaning in his post. So second simple question, what is the process with a IQ260? Cable from lens to back, I haven't seen an IQ back before so cable sync to flash? Or is there a way to fire with my profoto air remote?

Sorry for the questions, just trying to get things in order before everything arrives.

Thanks

Mat

A [Multiport to Sync] cable goes from the lens to the back whether dealing with strobe or not. When using strobe you then plug the flash sync cable (to the strobe direct, or to the transmitter) into the digital back flash sync port.

Don't apologize for questions! But do remember you have every right to ask your dealer to step you through these things as it is, quite literally, their job . Most of my day is spent answering such questions from Digital Transitions' customers.

Re: Silly question?! Flash sync and tech camera

Great, thanks Doug, I understand now. Is there diagram that shows the ports on the IQ260? I looked at the documentation but it doesn't give a breakdown of the different ports.

Cheers

Mat

Mat,

Set up your tech camera as usual. Then hook up your wireless transmitter (or long pc sync cable) to the pc sync port on the side of the digital back. To use the Profoto Air remote, you'll need to use a pc sync cord to mini phone similar to using a Pocket Wizard and connecting it to the camera or in this case, the digital back.